A novel polarization interferometer for measuring upper atmospheric winds |
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| Authors: | Mu Ting-Kui and Zhang Chun-Min |
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| Institution: | MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, School of Science, Xi'an Jiaotong University, Xi'an 710049, China |
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| Abstract: | A static polarization interferometer for measuring upper
atmospheric winds is presented, based on two Savart plates with
their optical axes perpendicular to each other. The principle and
characteristics of the interferometer are described. The
interferometer with a wide field of view can offer a stable
benchmark optical path difference over a specified spectral region
of 0.55--0.63~$\mu $m because there are no quarter wave plates.
Since the instrument employs a straight line common-path configuration
but without moving parts and slits, it is very compact, simple,
inherently robust and has high throughput. The paper is limited
to a theoretical analysis. |
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| Keywords: | polarization interferometer upper atmospheric winds optical path difference |
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